Buffing machine foe boots and shoes



2 sheets-sheet 1.

(NO Model.)

P. W. COY.

BOPPINS MACHINE-FOR BOOTS AND SHOES.

No. 247,315. Patented Sept. 20,1881.

(No Model.) 2 Sheets--Sheet 2.

F W. OOY.

v BUFFING MACHINE POR BOOTS AND SHOES.

No. 247,315. Patented Sept.-20, 1881.

lllllllfllllllllllll NNIIIIIIIIIIIIIH) 3 s UNITED STATES PATENT OFFICE- FREDERICK W. COY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO GEORGE H. P. FLAGG, OF SAME PLACE.

BUFFlNG-MVACHINE FOR BOOTS AND SHOES.

SPECIFICATION forming part of Letters Patent No. 247,315, dated September 20, 1881.

Application filed March 30, 1881. (No model.)

To all 'whom it may concern:

Be it known that I, FREDERICK W. CoY, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain Improvements in Machines for Buing the Bottoms and Shanks of Soles, of which the following is a full, clear, concise, and exact description, reference being had to the accompanyingdrawings, in which- Figure 1 is a front elevation, and Fig. 2 a side elevation, of a machine embodying my invention. Fig. 3 is a section-on line ww of Fig. 4, and both these figures are details illustrating one feature of my invention. Figs. 5, 6, and 7 are views of the shank-wheel, Fig. 5y

being an elevation, Fig. 6 a plan, and Fig. 7 av buing the bottoms, and the shank-wheel b,for

buiing the shanks. The bufng-rolls a may be called pulleys,7 as they, in connection with the idler-pulleys d, carry an abrasive belt, f, by which the bufng is performed. This belt is shown in place on the left of Fig. 1. The shank-wheel b is of novel construction, fully described below, and carries a strip of sandpaper or other abrasive material for bufling the shanks.

4One feature of my invention relates to the combination of the two pulleys a and d; and it consists in mounting one of them (in this instance the idler d) in such a manner that it can be moved not only toward pulley or roll a, in order that the belt f may be readily put in place and removed, and away from pulley a, in order to tighten belt f, but also so that its axis may be readily adjusted in position with relation to the axis of the roll or pulley a, this last being the distinguishing characteristic of this part of my invention, as fully explained below.

The best form of mechanism known to me for embodying my invention is that shown in the drawings, in which d' is an arm journaled at d2 to the frame ofthe machine. On this arm d is journaled at d4 the yoke d3, and in 5o this yoke d3 the idler d is journaled. It will be seen that motion of the arm d on its axis d2 will carry idler l toward or away from roll a, and that mot-ion of yoke d3 on its axis d4 will alter the relation ofthe axis of idler d and roll a.

To put on or take oft' the belt f, the arm d is lowered, thus bringing theidler d so near to roll a that the belt ca n be readily put on or taken on. By raisingarm d the idler dis car.- 6o ried away from roll a far enough to tighten belt f.' If the belt f were true and the idler d and roll a also true, and their axes parallel, the belt would of course run. true, even at the high speed at which these machines are runcommonly over two thousand revolutions a minute-butl as the roll a must be covered with felt or some other soft elastic material to adapt it for bufing soles, it is very difcult to keep the beltfin place; and the main object 7o of my invention is to remedy this difficulty. I have done this by so mounting idler d that the direction of its axis can be readily shifted within the necessary limits by the operator, andpwhile the machine is running.

The projecting arm d5 of yoke d3 has a nut, d6, mountedv in its forked end. A screw, d", passes through this nut d6, and this screw is connected with the front end of the arm d. When the machine is startedup the beltf 8o will usually tend to work sidewise, and this is at once corrected by the operator by means of screw d", by turning that screw in one or the other direction, according as the belt moves sidewise toward or away from the frame of the 8 5 machine.

Another feature of my invention consists in using a spring-pressure to tighten belt f that is to say, instead of taking hold of arm d directly to raise it in order to tighten the belt 9o f, the lever d is used, and this lever is connected to arm d by means of spring dg. This lever d is held up by the spring-catch d1", and when so held up the tension of spring d9 strains the belt, that tension being adjusted to give the de- 9 5 sired strain.

'Ihe shank-wheel b is so constructed that its rim b canl be sprung to clamp the ends ofthe abrasive strip.

In that form of my invention shown in Figs. 5, 6, and 7 of the drawings the strip is applied by first inserting one end of it in the inclined slit b2, then carrying it in the direction ofthe arrow, Fig. 5, around the wheel, inserting its other end in the slit b', and clamping it by springing the rim of wheel b, so as to cause the walls of slit b to press hard upon the ends of the abrasive strip. The clamping is done by turning shaft b3 by means of the finger-piece b4, (fast to shaft b3,) the cams b5 b5 (fast to the shaft b3) acting on projections L6 b6 (fast to the l rim of wheel b, one on either side of slit b) to force the walls ofslit b toward each other. 'Ihe shaft b3 is supported bythe inner part of spoke D7, the rest of that spoke being omitted in casting the wheel (or cut off after the wheel is cast) to make room for the mechanism b3 b4 b5, by which the clamping-jaws are operated.

The shank-wl1eel is, of course, covered with felt to serve as a cushion for the abrasive strip,

the felt being applied in the usual way, except that it must also have a slit in it corresponding with slit b, so that it will not prevent the insertion of the ends of the abrasive strip, as

above described.

The dust from the bufting-rolls a ce and shankwheel b is carried away by the fan in the usual Y manner.

The beltfis made in any suitable way, the

'belt used in practice being that described'in the application of G. H. P. Flagg and Villiam Gordon, tiled December 29, 1880.

To renewr a worn-out belt and replace it by a fresh one, the operator releases spring-catch l few minutes.

The bufting is done just as if the rolls a to The renewal of the abrasive material is, ot' 55 course, wholly different in my machine from what it isin any otherbufting-machine known to me; but this is readily learned by the operator. p

I am aware that abrasive belts are old, and that I am not the rst to use an abrasive belt for buting shoe-soles. (See YEnglishV patent to Robert Flude, No. 2,861 of i865.)

I am also aware ofthe patent to P. F. Randolph, No. 95,265, dated September 28, 1869,

-Reissue No. 4,127, September 30,1870, in which the article to be abraded was held against that v part of the belt which was in contact with the rubber-covered pulley or roll, and I disclaim all that is described in those patents.

I/Vhat I claim as my invention is` 1. In combination,roll a, pulley d, and mechanism, substantially such as is described, for .moving pulley d toward and irom roll a, and for adjusting the axis of the pulley with relation to the axis of the roll, as and for the purpose specied.

'f 2. In a machine for bnffing boots and slices,

FREDERICK w. CCY.`

Witnesses:

J. E. MAYNADIER., J. R. SNOW. 

